How can I measure the resistance to roll of a croquet ball on a lawn?

or:How can I measure the resistance to roll of a croquet ball on a lawn?or:i do not think you can. the friction force Fr = \u03bcN=\u03bcmg depends o

or:How can I measure the resistance to roll of a croquet ball on a lawn?

or:i do not think you can. the friction force Fr = \u03bcN=\u03bcmg depends on \u03bc which is specific to any individual surface. So the only way would be to try to determine it by experiment - you take a ball, see how much plastic deformation it has (by experiment), then you apply a force on the ball and measure the distance it rolled. Having all those you will be able to determine an average Fr of the lawn surface

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